Calcium-carbid holder.



No. 635,865. Patented Oct. 3|, I899; a. MILLER.

CALCIUM CABBID HOLDER.

(Application filed Aug. 31, 1899.)

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NITED STATES GEORGE MILLER, OF BALTIMORE, MARYLAND.

CALCIUM-CARBID HOLDER.

SPECIFICATION forming part of Letters Patent No. 635,865, dated October 31, 1899.

Application filed August 31, 1899- Serial No. 729,03 5, (N model-l dent of Baltimore, in the State of Maryland,

have invented certain new and useful Improvements in Oalcium-Carbid Holders; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in calcium-carbid holders, and more particularly to a cartridge for acetylene-gas lamps, the object of the invention being to provide a dev vice of the above-mentioned character which will be extremely simple in construction, neat in appearance, efiectually exclude air and moisture, and which shall be most convenient for use.

With this object in view the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in longitudinal section illustrating my improvements. Fig. 2 is an end view, and Fig. 3 is a view of a modification.

Heretofore in the manufacture of calciumcarbid cartridges a metal receptacle has been provided with an openingin each end covered by tin-foil or other material to prevent the admission of moisture when not in use and permit the ready insertion of a tube or other device to admit the Water to the carbid and permit the escape of gas. One way of fastening this covering over the opening has been to solder it to the receptacle; but this and all other means now in use have proven not only tedious and expensive, but have resulted in making the cartridge very unsightly; and it is the object of my invention to so construct the cartridge that the covering will be secured to the receptacle while the can is being manufactured, thus resulting in an extremely slight expense and at the same time give to the cartridge a neat and attractive appearance, besides making the cartridge much stronger and more durable than those now in use.

A represents a cylindrical body provided at each end with an outwardly-flaring flange 1, and B represents the ends of the cartridge,

each having a central opening 2 therein. The ends B are provided with flanges 3, bent first upwardly and then downwardly to inclose the upper and lower flanges, respectively, of the body and to clamp disks 4, of tin-foil or other suitable material easily punctured, similar in general shape to the said ends 13. It will thus be seen that one end of the can, with the tinfoil disk, can be placed on the body before the calcium carbid is placed in the cartridge, and after the cartridge is charged the other end and tin-foil disk can be readily secured in place.

In the form of the invention shown in Fig. 3 the ends of the body portion A of the can are made slightly flaring, as shown at 5, and the heads B (each provided with a central hole 6) are made fiat and their peripheries are bent to embrace the flaring ends of the body portion, the tin-foil disks being secured in place in the manner hereinbefore described.

Various slight changes might be resorted to in the general form and arrangement of the several parts described without departing from the spirit and scope of my invention, and hence I Would have it understood that I do not Wish to limit myself to the precise details set forth, but consider myself at liberty to make such slight changes and alterations as fairly fall within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. As an article of manufacture, a calcium= carbid holder comprising a body open at each end, ends for said body having openings therein, a covering for each end of material easily punctured and adapted to close said openings,

said ends secured at their edges to the body with the edges of the covering between them and the ends of the body.

2. As an article of manufacture, a calciumcarbid holder comprising a cylindrical body having its ends made flaring, ends for said body having openings therein, of material easily punctured adapted to cover said openin gs in the ends and flanges on said ends adapted to clamp the flaring ends of said body and secure the coverings in place.

3. A carbid-cartridge consisting of a body portion, ends therefor, each havingahole, tinspecification in the presence of two subscribfoil (liisks covgringsheglgllesgndsaid etnds 2mg ing Witnesses. over appingt een so 1e 0 y or ion an flanges on said ends embracing the ends of GEORGE 1V HLLER' 5 the body portion and the ends of said tin-foil Witnesses:

disks. HARRY CRAVEB,

In testimony whereof I have signed this CHAS. S. W. BOULDIN. 

